Packing



Feb. 13, 1934. H A F H FIELD 1,946,528

PACKING Filed NOV. v:5, 1950 Wd@ www@ @gw-f o @o :I ffy o E M. 3

7' INI!!! INVENTOR MM www ATTORNEYS Patented Feb. 13, 1934 PATENT GFFECEPACKING Fletcher Ii. Field, Detroit,A Mich., assignor 'to RhodesMetallic Packing Company, Detroit, Mich., a corporation o' MichiganApplication November 3, 1930. Serial No. 493,202

10 Claims. (Cl. 154-455) This invention relates to improvement inmetallic packing employed for packing rods, shafts and the like.

One of the principal objects of this invention is to provide a metallicpacking having high heat resisting properties.

Heretofore it has been customary in constructing metallic packing andthe like to employ Babbitt metal but in practice it has been found thatpacking formed of Babbitt metal is practically incapable of resistingtemperature much in excess of 450 F. In accordance with the presentinvention I propose constructing my packing of a metal having high heatresisting properties and ca- I-'j pable of resisting temperatures up toapproximately 1,000 F.

One metal which I have found suitable and to meet the conditionsspecilied above, is magnesium alloy. Another, is an alloy oi copper andlead.

In fact, the present invention contemplates forming the packing ofmagnesium alloy; an alloy of copper and lead, or any other non-abrasivealloy having high heat resisting properties.

My present invention also contemplates the provisions of an outerprotecting cover for the packing formed of braided magnesium ormagnesium alloy wire.

My invention also contemplates a packing having a core formed ofmagnesium or magnesium j alloy wire around which asbestos is braided.

30 The4 essentials of my invention will be made more apparent as thisdescription proceeds, especially when considered in connection with theaccompanying drawing wherein.

i f' Figure 1 is a fragmentary elevational view il- 5" lustrating oneform of packing constructed in accordance with my invention;

Figure 2 is a sectional view taken substantially on the plane indicatedby line 2-2 in Figure 1;

Figure 3 is a view similar to Figure 1 of a slightly modied form ofconstruction, and

Figure 4 is a sectional view taken substantially on the plane indicatedby line 4 4 in Figure 3.

Referring now more particularly to Figures 1 and 2 it will be noted thatthere is illustrated a 55" core 10 which extends centrallylongitudinally of the packing and this core may be made of rubber orasbestos and be constructed in the form of a helix or a braided memberor in any other de- .,sired manner and of any desired material. It is59'* desirable, however, that the core be relatively compressible.

The reference character 11 indicates an enclosing or surrounding layerof metal constituting the if body of the packing. This surrounding body55AL may be formed of magnesium, magnesium alloy,

an alloy of copper and lead, or any other nonabrasive alloy capable oiwithstanding high temperatures or in other words, having high heatresisting properties. A

The body 11 may be constructed'n any preferred or desired manner as, forinstance, from strips oi material which are longitudinally folded andinteri'olded and compressed in interlocked position. When forming thebody of the packing ci' metallic strips, these strips may be coated onone or both sides with a lubricant such as oil or graphite or both orany other preferred or desired lubricant. When strips thus coated areinteriolded and pressed in interlocking position, an inherentlyresilient structure results and in use the lubricant is slowly freed sothat the packing becomes practically self-lubricating.`

In Figures l and 2 the reference character l2 indicates an outerprotecting cover of preferably flexible material such as fabric or thelike which u, is Woven around the structure in any Well known manner.

Instead of the usual fabric protecting cover, may make a covering ofbraided magnesium or magnesium alloy wire, such an arrangement beingcontemplated by the present invention.

In Figures S and 4, I have illustrated an outer protecting cover 13formed of braided magnesium or magnesium alloy wire.

This protecting cover might also be formed of wire made of an alloy ofcopper and lead or of some other non-abrasive alloy having high heatresisting properties.

In Figures 3 and 4, the body 11 of the packing is formed oi any of thematerials and in any of gd, the Ways suggested in connection with theformer construction shown in Figures 1 and 2.

In Figures 3 and 4 there is shown a core 14 composed of a plurality oflengths of magnesium or magnesium alloy wire 15 enclosed in a pro- 95'testing casing or cover 16 of asbestos which could be woven around themagnesium wires 15 in the same manner in which the outer protectingcovers are usually produced.

A packing constructed in accordance with this invention is not onlyflexible and resilient, but has high heat resisting properties and maybe employed to advantage in many places where Babbitt metal packings areunsatisfactory.

While several forms of construction of my invention have beenillustrated and described herein, the illustrated forms of constructionshould be considered as suggestive only, reservation be- I, ing made tomake such changes and modifications JM! loo its

as may come Within the purview of the accompanying claims.

What I claim as my invention is:

1. A metallic packing comprising a core, a surrounding layer of anon-abrasive metal alloy having high heat resisting properties, and aprotecting cover of braided magnesium alloy Wire.

2. A metallic packing comprising a core of asbestos and magnesium Wire,and a surrounding layer of a non-abrasive metal alloy having high heatresisting properties.

3. A metallic packing comprising a core of asbestes and magnesium alloyWire, and a surrounding layer of a non-abrasive metal alloy containingmagnesium and having high heatresisting properties.

4. A metallic packing comprising a core, a surrounding layer of anon-abrasive metal alloy containing magnesium and having `high heatresisting properties, and an outer protecting cover of braided magnesiumWire, l Y

5. A metallic packing comprising a core of asbestosrand magnesium Wire,asurrounding layer of non-abrasive metal alloy containing magnesiumandhaving high heat resisting properties,

and an outer protecting cover of braided magnesium Wire.

6. A metallic packing comprising a core formed of magnesium wiresurrounded by a protecting cover of asbestos, and a surrounding layer ofa non-abrasive metal alloy having high heat resisting properties.

7. A metallic packing comprising a core formed of a plurality of lengthsof Wire containing magnesiurn, a coverv of asbestos woven around saidcore, a body surrounding said core and formed of strips of materialwhich are longitudinally folded and interfolded, said strips of materialcontaining magnesium, and a covering on said body of braided Wirecontaining magnesiumA 8. A metallic packing comprising a core containingmagnesiurnand a surrounding layer of a non-abrasive metal having highheat resisting properties.

9. A metallic'packing comprising a core, a surrounding layer of anon-abrasive metal having Vhigh heat resisting properties, and aprotective FLETci'Ea n. i

